Historical water quality data measured on a continuous basis at over 23 locations across Canada is included in this dataset. Most locations include hourly temperature, dissolved oxygen, pH, specific conductance and turbidity. Data are collected by Environment and Climate Change Canada (ECCC) and in partnership with other federal departments and provinces and territories to enable the detection of short-term water quality events, and to determine trends in water quality, especially at transboundary sites (or Federal waters) in support of Federal legislation and international agreements, or to report on the status of Government of Canada priority aquatic ecosystems.

Contaminants surveillance data in freshwater at sites in the Pacific Basin are included in this dataset. Measurements may include physical-chemical parameters such as temperature, pH, alkalinity, and major ions; nutrients, metals, pharmaceuticals and personal care products, pesticides and persistent organic pollutants. The number of sites varies from year-to-year, and sampling frequencies vary from one location to another, as surveillance activities are adjusted according to evolving environmental pressures and governmental programs. Data are collected in order to determine baseline water quality status, evaluate the effectiveness of management actions, verify compliance with water quality objectives, and identify emerging issues.

Long-term freshwater quality monitoring data for two sites in the Missouri River Basin for the past 15 years or longer for nutrients, metals, major ions, and other physical-chemical variables are included in this dataset. Monitoring is conducted by Environment and Climate Change Canada (ECCC) to assess water quality status and long-term trends, detect emerging issues, establish water quality guidelines and track the effectiveness of remedial measures and regulatory decisions. Supplemental Information http://www.ec.gc.ca/eaudouce-freshwater/default.asp?lang=En&n=50947E1B-1

Provides stream water quality monitoring data for a number of parameters, including total and dissolved nutrients, metals, and chloride. The Provincial (Stream) Water Quality Monitoring Network (PWQMN) measures water quality in rivers and streams across Ontario. This dataset provides stream water quality monitoring data for a number of parameters, including total and dissolved nutrients, metals, and chloride. Spatial information for stream monitoring locations across Ontario are also available. Keywords: Streamwater, Nutrients, Fresh Water Stream Water Quality Map

The Nova Scotia Automated Surface Water Quality Monitoring Network was established in 2002 to assess water quality in surface waters across the province at five stations. In 2019 the station list was modified to reduce overlap with Environment and Climate Change Canada surface water quality monitoring stations. The results are used to help manage water resources, determine baseline water quality in lakes and watercourses throughout the province, evaluate the impact of human activities on surface water, and assess long term trends in water quality. The following weblink connects to a Nova Scotia Environment and Climate Change web map that includes the five monitoring station locations within the province and an alternative method for downloading the same datasets: http://nse.maps.arcgis.com/apps/webappviewer/index.html?id=7ded7a30bef44f848e8a4fc8672c89bd

Long-term freshwater quality monitoring data for three sites in the Churchill River basin for the past 15 years or longer for nutrients, metals, major ions, and other physical-chemical variables are included in this dataset. Monitoring is conducted by Environment and Climate Change Canada (ECCC) to assess water quality status and long-term trends, detect emerging issues, establish water quality guidelines and track the effectiveness of remedial measures and regulatory decisions. The information supports activities of the Prairie Provinces Water Board (PPWB). Supplemental Information. http://www.ec.gc.ca/eaudouce-freshwater/default.asp?lang=En&n=50947E1B-1

Ontario has a comprehensive set of measures and regulations to help ensure the safety of drinking water. The following dataset contains information about the drinking water systems, laboratories and facilities the Ministry of the Environment, Conservation and Parks is responsible for monitoring to ensure compliance with Ontario's drinking water laws. The dataset includes information about: * the number and type of registered systems and laboratories * drinking water quality test results * adverse water quality incidents * activities to support reduced lead in drinking water * enforcement activities related to inspections * orders and convictions * system operator certification

This data set includes information on sampling locations, water chemistry and chlorophyll collected at 18 locations in the Great Lakes-St. Lawrence River and 4 locations in Lake Simcoe.

Pesticides surveillance data in freshwater from federal and federal-provincial sites at various locations throughout Canada are included in this dataset. Measurements mostly include pesticides but could include physical-chemical parameters such as temperature, pH, alkalinity, major ions, nutrients and metals. The number of sites varies from year-to-year, and sampling frequencies vary from one location to another, as surveillance activities are adjusted according to evolving environmental pressures and governmental programs. Data are collected in order to determine baseline water quality status, determine event-based pulse concentrations, evaluate the effectiveness of management actions, verify compliance with water quality objectives, and/or identify emerging issues. Additional information on the surveillance project allows suitable data interpretation and can be obtained by contacting the data authority. More pesticides data are available as part of the National Long-term Water Quality Monitoring Data. http://www.ec.gc.ca/eaudouce-freshwater/default.asp?lang=En&n=50947E1B-1

Long-term freshwater quality monitoring data for over eight sites in the Ottawa River basin for the past 15 years or longer for nutrients, metals, major ions, and other physical-chemical variables are included in this dataset. Monitoring is conducted by Environment and Climate Change Canada (ECCC) as well as through the Canada-Quebec Water Quality Monitoring Agreement and the St. Lawrence Action Plan to assess water quality status and long-term trends, detect emerging issues, establish water quality guidelines and track the effectiveness of remedial measures and regulatory decisions. Data for sites operated by the province are available from Quebec's Sustainable Development, Environment and the Fight against Climate Change Ministry. http://www.ec.gc.ca/eaudouce-freshwater/default.asp?lang=En&n=50947E1B-1

Water quality is a globally accepted and widely used measure for assessing and monitoring the condition of freshwater ecosystems. It has a pivotal affect on the integrity of aquatic ecosystems. The physical and chemical characteristics of water have a strong influence on aquatic biota and freshwater ecosystem processes. As a result, changes in water quality may provide an early warning of environmental stress to aquatic ecosystems. The water quality index (WQI) is a tool that was developed by the Canadian Council of Ministers of the Environment (CCME) to summarize complex water chemistry data to a single index in order to simplify and standardize water quality assessment and reporting across the country. Water samples are taken twice a year at the same location from 18 lakes during June and August.

Long-term freshwater quality monitoring data for sites in Newfoundland and Labrador (NL) for the past 15 years or longer for nutrients, metals, major ions, and other physical-chemical variables are included in this dataset. Monitoring is conducted by Parks Canada. Environment and Climate Change Canada (ECCC) and with NL Environment and Conservation through the Canada-NL Water Quality Monitoring Agreement to assess water quality status and long-term trends, detect emerging issues, establish water quality guidelines and track the effectiveness of remedial measures and regulatory decisions. Data for additional sites are available from NL Environment and Conservation.

Long-term freshwater quality monitoring data for two sites in the Winnipeg River basin for the past 15 years or longer for nutrients, metals, major ions, and other physical-chemical variables are included in this dataset. Monitoring is conducted by Environment and Climate Change Canada (ECCC) as well as through the Lake Winnipeg Basin Initiative to assess water quality status and long-term trends, detect emerging issues, establish water quality guidelines and track the effectiveness of remedial measures and regulatory decisions. Supplemental Information http://www.ec.gc.ca/eaudouce-freshwater/default.asp?lang=En&n=50947E1B-1

This dataset is a simplified version of water quality measurements taken in Tuktut Nogait National Park. It is a collection of measurements which make up two water quality indexes: Nutrients and Major Ions (NMI) Index and Metals Index. The measurements are taken along the Hornaday River annually in early-July. The chemical composition of water influences the biological productivity and species composition of rivers. Changes in the water quality in the rivers and creeks in the Western Arctic can act as early indicators of ecosystem change. The presence of contaminants, such as persistent organic pollutants (POPs), heavy metals, and radionuclides are a concern because they can have negative effects on Arctic ecosystems and human health. Furthermore, a changing climate in the Arctic can influence the nutrient levels in the streams and rivers as more nutrients will be released from thawing permafrost. As the expected effects of climate change on Arctic ecosystems are still unknown, continuous monitoring is paramount.

The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada's performance on key environmental sustainability issues. These indicators track facility-based releases to water of 4 substances that are defined as toxic under the Canadian Environmental Protection Act, 1999: mercury, lead, cadmium and arsenic and their compounds. For each substance, data are provided at the national, regional (provincial and territorial) and facility level, as well as by source. The indicators inform Canadians about releases to water of these 4 substances from facilities in Canada. The Releases of harmful substances to water indicators also help the government to identify priorities and develop or revise strategies to inform further risk management and to track progress on policies put in place to reduce or control these 4 substances and water pollution in general.Information is provided to Canadians in a number of formats including: static and interactive maps, charts and graphs, HTML and CSV data tables and downloadable reports. See the supplementary documentation for the data sources and details on how the data were collected and how the indicator was calculated. Canadian Environmental Sustainability Indicators: https://www.canada.ca/environmental-indicators

Surface freshwater quality monitoring in the Fraser River Basin is carried out under the Canada-British Columbia Water Quality Monitoring Agreement. Monitoring is conducted to assess water quality status and long-term trends, detect emerging issues, establish water quality guidelines and track the effectiveness of remedial measures and regulatory decisions.

This dataset provides marine bacteriological water quality data for bivalve shellfish harvest areas in New Brunswick, Canada. Shellfish harvest area water temperature and salinity data are also provided as adjuncts to the interpretation of fecal coliform density data. The latter is the indicator of fecal matter contamination monitored annually by Environment and Climate Change Canada (ECCC) within the framework of the Canadian Shellfish Sanitation Program (CSSP). The geospatial positions of the sampling sites are also provided. These data are collected by ECCC for the purpose of making recommendations on the classification of shellfish harvest area waters. ECCC recommendations are reviewed and adopted by Regional Interdepartmental Shellfish Committees prior to regulatory implementation by Fisheries and Oceans Canada (DFO). This dataset is 'Deprecated'. Please use updated source here. https://open.canada.ca/data/en/dataset/6417332a-7f37-49bd-8be9-ce0402deed2a

Long-term freshwater quality monitoring data for sites in the Maritime Coastal basin for the past 15 years or longer for nutrients, metals, major ions, and other physical-chemical variables are included in this dataset. Monitoring is conducted by Environment and Climate Change Canada (ECCC) and Parks Canada as well as through the Canada-New Brunswick Water Quality Monitoring Agreement, the Canada-PEI Water Annex, and through collaborative work with the province of Nova Scotia to assess water quality status and long-term trends, detect emerging issues, establish water quality guidelines and track the effectiveness of remedial measures and regulatory decisions.

Long-term freshwater quality monitoring data for over five sites in the Peace - Athabasca River Basin for the past 15 years or longer for nutrients, metals, major ions, and other physical-chemical variables are included in this dataset. Monitoring is conducted by Environment and Climate Change Canada (ECCC) as well as through the Joint Oil Sands Monitoring Program, or in collaboration with Parks Canada and the Northwest Territories to assess water quality status and long-term trends, detect emerging issues, establish water quality guidelines and track the effectiveness of remedial measures and regulatory decisions. Supplemental Information http://www.ec.gc.ca/eaudouce-freshwater/default.asp?lang=En&n=50947E1B-1

A water quality monitoring station on the Kootenay River at Kootenay Crossing (and Kicking Horse River station near Field) are operated by Environment Canada in partnership with Parks Canada. The Canadian Council of Minister’s metric of Water Quality Index (WQI) is a unitless value between 0 and 100. Once the WQI value has been calculated, water quality is classified to Excellent, Good, Fair, Marginal, Poor. For each 3-year period an indicator of change from one period to the subsequent period is assessed.